Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods

doi:10.5194/acp-19-617-2019

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（2010~）

	Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods
	Li, Bowei 1; Ho, Steven Sai Hang 2,3; Gong, Sunling 1,4; Ni, Jingwei 1; Li, Huairui 1; Han, Liyan 1; Yang, Yi 1; Qi, Yijin 1; Zhao, Dongxu 1
通讯作者	Ho, Steven Sai Hang(stevenho@hkpsrl.org) ; Gong, Sunling(gongsl@cma.gov.cn)
	2019-01-16
发表期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
卷号	19 期号:1 页码:617-638
摘要	A 5-month campaign (from May to September 2017) was conducted to characterize volatile organic compounds (VOCs) for the first time at four sites in Zhengzhou, Henan Province, China, where ground level ozone (O-3) concentration has shown an increasing trend in recent years. Canister samples were collected for the measurement of 57 VOCs, which, along with reactive nitrogen oxides (NOx), are the most important O-3 precursors. During the same period, O-3 and its precursor gases were monitored online simultaneously. The results indicated that the average mixing ratio of total quantified VOCs (Sigma(VOCs) = 28.8 +/- 22.1 ppbv) in Zhengzhou was lower than that in the other Chinese megacities, while alkyne comprised a higher proportion of Sigma(VOCs). The abundances, compositions and ratios of typical VOCs showed clear spatial and temporal variations. Cluster analysis indicates that air masses from the south of Zhengzhou were cleaner than from other directions. The molar ratio of VOCs to NOx indicated that, in general, O-3 formation was more sensitive to VOCs than NOx formation in Zhengzhou. The source apportionment was conducted with positive matrix factorization (PMF), and it was found that vehicle exhaust, coal and biomass burning and solvent usage were the major sources for ambient VOCs at all four sites. From potential source contribution function (PSCF) analysis, the strong emissions from coal + biomass burning and solvent usage were concentrated in the southwest of Shanxi and Henan provinces. This study gathers scientific evidence on the pollution sources for Zhengzhou, benefiting the government to establish efficient environmental control measures, particularly for O-3 pollution.
DOI	10.5194/acp-19-617-2019
关键词[WOS]	VOLATILE ORGANIC-COMPOUNDS ; PEARL RIVER-DELTA ; HYDROCARBON SOURCE APPORTIONMENT ; GROUND-LEVEL OZONE ; NONMETHANE HYDROCARBONS ; INDUSTRIAL-AREA ; EMISSION INVENTORIES ; ROADSIDE ENVIRONMENT ; CHEMICAL-COMPOSITION ; SEASONAL-VARIATIONS
收录类别	SCI ; SCI
语种	英语
资助项目	Key Program of National Natural Science Foundation of China[91744209] ; Key Program of National Natural Science Foundation of China[91544232]
WOS研究方向	Meteorology & Atmospheric Sciences
项目资助者	Key Program of National Natural Science Foundation of China
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000456028700003
出版者	COPERNICUS GESELLSCHAFT MBH
引用统计	被引频次：110[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14387
专题	黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Ho, Steven Sai Hang; Gong, Sunling
作者单位	1.Langfang Acad Eco Ind Wisdom Environm, Langfang 065000, Peoples R China 2.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA 3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China 4.Chinese Acad Meteorol Sci, CMA, Ctr Atmosphere Watch & Serv, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Li, Bowei,Ho, Steven Sai Hang,Gong, Sunling,et al. Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(1):617-638.
APA	Li, Bowei.,Ho, Steven Sai Hang.,Gong, Sunling.,Ni, Jingwei.,Li, Huairui.,...&Zhao, Dongxu.(2019).Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(1),617-638.
MLA	Li, Bowei,et al."Characterization of VOCs and their related atmospheric processes in a central Chinese city during severe ozone pollution periods".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.1(2019):617-638.